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On frequency quantization in sinusoidal audio coding
KTH, School of Electrical Engineering (EES), Sound and Image Processing.
2005 (English)In: IEEE Signal Processing Letters, ISSN 1070-9908, E-ISSN 1558-2361, Vol. 12, no 3, 210-213 p.Article in journal (Refereed) Published
Abstract [en]

In this work, we develop a new method for jointly optimal quantization of sinusoidal frequencies, amplitudes, and phases and apply the method to sinusoidal audio coding. This is an extension of an earlier work on quantization of sinusoidal amplitudes and phases to frequencies. The optimization is performed for a set of sinusoids that models a short segment of an audio signal. For a given bit-rate constraint, the optimal quantizers minimize a single-letter weighted distortion measure that accounts for perceptual importance of sinusoids. The quantizers are derived analytically using high-rate theory. The method yields high performance and has a number of practical advantages over conventional sinusoidal quantization methods.

Place, publisher, year, edition, pages
2005. Vol. 12, no 3, 210-213 p.
Keyword [en]
audio coding, high-rate theory, quantization, sinusoidal coding
Identifiers
URN: urn:nbn:se:kth:diva-14545DOI: 10.1109/lsp.2004.842260ISI: 000227130500011Scopus ID: 2-s2.0-14644390904OAI: oai:DiVA.org:kth-14545DiVA: diva2:332586
Note
QC 20100525Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2017-12-12Bibliographically approved

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